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Message * Nepreryvnoe Ėkologicheskoe Obrazovanie i Ėkologicheskie Problemy Regionalʹnai︠a︡ Nauchno-Prakticheskai︠a︡ Konferent︠s︡ii︠a︡, 06-07 Okti︠a︡bri︠a︡ 2005 G. : Sbornik Stateĭ Po Materialam Konferent︠s︡ii - 5817301999